221.203.248.0/21
🇨🇳CIDR
221.203.248.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇨🇳 China
City
Shenyang
RIR
APNIC
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 221.203.248.0/21 | AS4837CHINA169-Backbone - CHINA UNICOM China169 Backbone | Valid | APNICRADB | 6/14/2026 |
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 221.200.0.0/14 | AS4837CHINA169-Backbone - CHINA UNICOM China169 Backbone | Valid | — | 6/14/2026 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/221.203.248.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/221.203.248.0/21" | jq
External Links